﻿using System;

class RadiusOfACircle
{
    static void Main()
    {
        Console.Write("Enter radius = ");
        int radius = int.Parse(Console.ReadLine());

        Console.WriteLine("The perimeter of the circle is = " + (2 * Math.PI * radius));
        Console.WriteLine("The area of the circle is = " + (Math.PI * radius * radius));
    }
}

